Diagnostic test device



FIG. 1 is a perspective view of a diagnostic test device showing our new design;

FIG. 2 is a Front View thereof;

FIG. 3 is a Rear View thereof;

FIG. 4 is a Left Side View thereof;

FIG. 5 is a Right Side View thereof;

FIG. 6 is a Top View thereof; and,

FIG. 7 is a Bottom View thereof.

The broken lines in the drawings shown represent portions of the diagnostic test device that form no part of the claimed design. 

CLAIM The ornamental design for a diagnostic test device, as shown and described. 